Weaknesses: i have the bb mounting version, and whenever you hit rocks it rotates up. the boomerang also bent pretty severly when i was rolling over a 1 foot drop so now i'm debating what to do with it

Bottom Line:

well it does its job. mine bent so i dont know what to do. i'm thinking of sawing off the lower portion of the boomerang to keep it from hitting and bending because i dont think you need it.

its a good chainguide, kindof expensive if you buy new, that works well for DH just so long as you dont ever hit it on rocks because it will either rotate if its bb mounted or bend like mine did

Strengths: Strong light construction in a design that works. Basically every bikers consideration has been taken care of in this product.

Weaknesses: Too much money here in Germany.

Bottom Line:

The best design out there. I've checked out the new offerings from Truvativ and Race Face, found those models either too heavy (made os steal), too easy to break (plastic parts), and the boxes on the top-side of these systems serve as a handy crap collectors.

MRP System 2 is built solid and keeps the chain on 100% of the time without making a sound... what else can you ask for?

it's a chainguide and is works. there's nothing very special about it, it's basically just a couple of of pieces of milled sheet metal. way too expensive considering what you get. when you get it set up right it will work like a dream. don't buy one unless you can find it for cheap. if you're going to pay full price for a chainguide, get an e-thirteen instead.

Strengths: It's sturdy and strong and it has kept my chain on in all conditions (did I mention it looks cool).

Weaknesses: I heard they are expensive ($350 to $400 Canadian).

Bottom Line:

This is a sick chain guide that looks cool, can hit rocks without bending, and the chain never falls off. I learned through having this chain guide that you dont need a top roller because the bottom one keeps the chain so tight that the chain will never come off the ring.

Bones ComboOne of the arm has a bad tooth where it attach to the axe. Returned it to the company, they told me I abused it!!! The sent me another arm with the exact same bad tooth and charged me 150$. WTF!!! Now I don't know what to do, I wont pay that 150$ for sure. I hate Mrp waranty service.

It would be a good product if they would control the quality. If I could do my choice again, I would buy a E13 for sur. Cheaper, lighter, as strong or maybe stronger. Ask Cedric Garcia.

Strengths: Never have lost a chain in over a year, low maintenance, very strong...

Weaknesses: Price...my shop must have seen dollar signs on my head when I came in. Also, boomerang piece moves and slams up into chainstay (has done this on all bikes I have used it on)

Bottom Line:

This chainguide kicks ass! After a year of torture and two DH bikes, this is one part that has proven itself time and time again. I have cased jumps that would have folded most chainrings but the MRP just has scratches to show for it. Urban assault is no problem either as I have also cased to concrete and the MRP actually took a chunk out of the loading dock that I landed on! At race speeds, I still have the pedal power I need to keep mobbin. The only problem I have encountered has been that the boomerang will stuff itself into the chainstay after several rides. This has happened on all bikes that I have installed it on. Overall 5 flammin chilis for a truly bombproof product!

I switched over to a MRP System Slalom 1 chainguide after switching my bike over to a single chainring set-up. The results were outstanding, as I have no more chaindrop, chainsuck, and less chainslap. The rollers are legendarly smooth and the whole set-up stays put even under the hardest DHG loads and hits. The Slalom 1 was the only one that would fit on my low chainstay Haro, and when set up properly, the whole outfit looks like it was meant to be on this particular bike. Just a good product that does its job!

Weaknesses: ....the bottom brackt died after less than a 1000km. the bearings are soo worn out that the axel sits quite freely inside them. they are rusted where the bike only once saw rain riding home from work! of yeah no cased drops not even a bad crash and the bottom b rackt axel was bent so. dmr chieftains they are sealed and look good with bones speed guide and i still go them in balck...let's see

Bottom Line:

carefull bearings are a real joke as shimano deore lasts a lot longer!!!!!

Similar Products Used: most of what there is out there except for the re-attempts of the good old tioga revolver set up; saint and so on. but a lot have already voiced their scepticism and havethe single parts or remains to prove it.

Bike Setup: hope super t 24s and as long as it weighs around 20 21 kilos

dont skimp on any cheap sh@t had a dmr speedguard and had nothing but problems since having this chain has never come off and its ultra smooth and iv bashed the guards a lot doing street save save save!!!!!!! this is worth the dosh and look what all the pros use

Strengths: Makes you look like a hardcore mountain biker, when working, works well.

Weaknesses: Stops working somtimes. There are just little grug screws holding the inner ring AND the guide arms.... And so when you do actually use the bash guard, the whole thing just tilts, and you have to try to adjust it.. But if you have installed it properly (locktighted), then it is extremely difficult to fix that on the trail (at least without phucking the whole system up by twisting it around the bottom brack, digging a trench in your bottom bracket shell... Also, it's heavy, and over rated, for sure.

Bottom Line:

I think that people should think less about what brand is on their bike, and more about what will make their bike work better, and how far they can stretch their wallets. The mrp chainguide system was an impulse buy for me, in that I only bought it because I have seen it everywhere advertised as such a wonderful device.. Upon actually owning one, I almost want the janky ass noisy AC guide back... I think I will take this chainguide off, and throw it away.. Then I will buy a hussefelt chainguide system for my ellsworth so my bikes'll match... In looks and performance.... On a side note, the Hussefelt chainguide is wonderful.

Similar Products Used: Hussefelt II chainguide (which is comparable to an MRP, except without the bashrings ((keep in mind that the bashrings are actually a drawback from the mrp system)), except weighs less, and works better... The chain is trapped in the hussefelt system, it is not trapped in the mrp system.Also, the custom AC chainguide for the Giant ATX one